Operating range: 0.4 ... 6 m, light transmitter: LED, 660 nm, light type: red, alternating light, signal output: 2 push-pull outputs, short-circuit proof, reverse polarity protected, switching type: dark switching, connection: plastic plug M12 x 1, 4-pin, operating voltage: 10 ... 30 V DC, class 2, ambient temperature: -25 ... 60 °C (-13 ... 140 °F)